Analysis of energy efficiency for cooperative beamforming in wireless sensor networks
The energy consumption of cooperative beamforming was studied under given requirements on the end-to-end bit error rate （BER）,and the optimal numbers of cooperative node were obtained for different propagation environments and transmission distances. Considering both transmit and circuit energies, a...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2008-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74654654/ |
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| Summary: | The energy consumption of cooperative beamforming was studied under given requirements on the end-to-end bit error rate （BER）,and the optimal numbers of cooperative node were obtained for different propagation environments and transmission distances. Considering both transmit and circuit energies, a practical energy consumption model of co- operative beamforming in WSN was first proposed, and then its closed-form approximate solution was obtained. Based on this model, the energy consumption of cooperative beamforming was minimized by optimizing the numbers of coop- erative nodes. Analysis and simulations show that over some distance ranges, cooperative beamforming can achieve en- ergy savings compared with non-cooperative and STBC-based cooperative systems. Moreover, it is showed that there are the optimal numbers of cooperative nodes to minimize the total energy consumption for different propagation environ- ments and transmission distances. |
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| ISSN: | 1000-436X |